marsico



G. R. MARSICO.

SIGNAL.

APPLICATION FILED IUNEZB. 1918.

Patented June 10, 1919.

2 SHEETS-SHEET I.

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.IIIIIIIIII E Dn, OM T N E V W G. R. MARSICO.

SIGNAL.

I APPLICATION FILED JUNE 28| lgla. 1 ,306,493. Patented June 10, 1919.

2 SHEETS-SHEET 2.

UNITED sTATEs PATENT oEEIoE.

cnam-n. MAnsIco, or BROOKLYN, NEW Yoan.

` SIGNAL.

Speci'catio'n of Letters Patent. Patented June 10, 1919,

' Application med :une as, isis. ser1a1m.242,445.

type have included a rotor, a ratchet wheel and detent, -whereby motionof the rotor will be checked in one direction, and mechanism foradvancing the detent against the ratchet wheel to place the rotor inaction. To the rbest of my knowledge, the detent mentioned is alwaysyieldingly held in contact with the ratchet wheel and as a consequencethereof, undue friction and wear and tear are set up `between the partsand the eiliciency of the structure is thereby seriously impaired, itbeing impossible through the production of such friction to obtain amaximum working action of the rotor against the diaphragm.

In my invention which I willfully de scribe hereinafter, I lhaveprovided a structure wherein the diaphragm is displaced in a mannerwhereby the emitted sounds will\be of a clear pitch and greatermagnitude to insure a loud quick and sharp signal of uniform intensityand in practice, I employ a heavy rotor, a revolving hanger, and meanson the vhanger adapted to be actuated by centrifugal action and engagewith the rotor at a point remote from the axis thereof and therebyaugment the leverage force of said means against said rotor and thusaccelerate ulsation of the diaphragm.

I more speci cally provide a rotor having an external striking surfaceadapted to coact with the anvil of a diaphragm and an internalratchetsurface, the latter coacting with centrifugally advanced dogs ordetents-which are movably mounted upon a revolving lhanger and adaptedto be brought into positive contact with the ratchet surface when motionis transferred to the hanger. v Y y Another object of the invention isto provide a horn having its diaphragm with a fixed anvil and mechanlsmcoacting relatively broad provided with the anvil to displace' thediaphragm,

the said mechanism includingl actuating means and all of `which aremounted from a vcommon support which is adjustable with relation to theanvil whereby proper contact Irbetween the anvil and convenlence of theuser.

Another object of the invention is to provide a horn including a diaphraprovided With an-anvil, a ratchet provi ed with an externalstriking'surfaceand an internal ratchet surface, a revolving hanger, and

Identical detents supported from the .hanger 1n coacting relation withthe ratchet surface and reversibly arranged upon the hanger so thatywhen the'detents are worn atV one side, their positions may be reversedto insure their proper contact with the ratchet surface. l A stillfurther object of the invention is to provide -a horn having a diaphragmand a coacting rotor, the vlatter having an external striking surfaceand an' internal ratchet surface, the teeth of the latter bein andarranged to coact witg detentsv which are provided with broadcoactingsurfaces arranged for impingementagainst the ratchet surfacewhen the detente are actively presented thereto.

A still further Aobjeet of the invention is to provide a structure of,the class specified which will be simple, strong and durable and whichwill consist of parts capable of being readily separated from each otherto permit of the substitution of new parts for worn ones or to otherwiseenable access to Ibe properly gained to any of theparts ,for any purposewhatsoever.

In the drawings l Figure 1 is a longitudinal section through a portionof the structure showing parts in full-lines.

Fig. 2 is a section on line 2 2 of Fig. 1.

Fig. 3 is a section on line 3 3 of Fig. 1

with parts in elevation. Flg. 4 is a vertical .section through the thediaphragm displacing means can be obtained always at the l VSe5 , Fig. 6is an enlarged side view of one of the detents.

Fi 7 is a section taken substantially on line -7 of Fig-3.

Fig. 8 is a perspective view of the spring. Fig.`9-' is a side view of ahorn showing a known construction. Located within the casing 15 is arotor 19 which is supported to revolve upon an axle 20 which is mountedin a support 21.

The rotor 19 consists preferably of a heavy wheel of case hardenedsteel-and it 1s provided withan external striking surface 22 and aninternal ratchet surface 23, the teeth of said ratchet surface being ofsubstantially V shaped formation and the same are separated from eachother at relatively great intervals by intervening spaces 24 anddisposed at a relatively remote distance from sald axle 20. The teethare relatively broad as clearly shown in Fig. 4 and they lie parallelwith the center or axis of the rotor. for a purpose to be hereinafterfully explained. The rotor isprovided with a central opening 25 whichfreely receives the central portion of the axle 20, saidI axle havingreduced ends 27 and 28 which are respectively mounted in the sidebranches29 and 30 of the support 21. This support has its branches 29and 30 provided with annular extensions`32-which are secured' byfastenings 33 to a plate 34. This plate is mounted upon screws 35 at thecrown 36 of the casing 15 and as illustrated, these screws areadjustable inthe plate in order that the latter may .be slightlyseparated from the crown 36 to permit of movement of the support in thedirection ofthe diaphragm so as to regulate the pressure of the strikersurface 22 against its coacting anvil 18 of the diaphragm. In order topermit of a proper retention of the selected adjustment of the support,I provide a regulating screw 37 the same being adjustably mounted uponthe crown 36 and arranged in free contact with the plate 34 so as tohold the latter in a re1- atively fixed position.

The axle 20 is provided with a small gear wheel 38 and adjacent to, saidwheel andv Y xed to the axle is a relatively longer hanger 39 having oneor any suitable number of pins 40` which project into the open side 4 1of the rotor. These pins terminate approximately at the closed side 42ofthe ,rotor and.

as illustrated they are freely extended through apertures 43 in detents44. These detents are .each provided with a relatively broad flatsurface 45 which is adapted to come in at Contact with the next adjacenttooth of the described ratchet surface 23. By arranging the broad flatsurfaces of the incense ratchet teeth parallelc with the axisof therotor and providing the correspondingly formed' iiat surfaces 45 on thedetents, a substantial mating contact will be established between` thearts when it is desired to cause the rotor to ecome temporarily fixed tothe axle: As a result of this arrangement, lost motion Ibetween theparts will be avoided and a ositive action established at all times. hebranches 29 and 30 of the support are relatively .separable as stated,in \order that the rotor and in fact all of the several working parts ofthe mechanism can be removed when desired andthe positions of thedetents reversed upon their supporting pins 40 1n order to com ensatefor posysible wear between the sur aces `45 and the b road flatfsurfacesof the teeth 23.

l The gear wheel 38 is in constant mesh with a power transmittingv gear46 which is mounted upon an axle 47 vjournaled in the branches 29 and 30as shown in Fig. 3. This axle is provided with a small gear wheel 48which meshes with the teeth of an actuator 49. This actuator is in theform of sliding rod and it is provided with a ca 50 upon itsl exposedend' in Vorder that 1t may be conveniently manipulated by hand.

Said actuator is mounted to slide in a guide 51 secured to the branch 29of the support 21 and as shown, the actuator isprovided' with anvopening 52 in which .the hooked end 53 of 4a springl 54 is removablyengaged. ,This hooked end of the spring extends from a branch 55 of saidspring and as`shown in Fig. 7 said branch is freely slidable in a slot56 formed in the branch 29 .of the support 21.

sprn is angularly ofi' set at 57 and is remova ly engaged ma downwardland inwardly extending opening 58 in sald branch 29 of the support. Inthis manner the spring is freely removable from the' operating parts ofthe mechanism to permlt-tli'e actuator 49 to be entirely withdrawn fromthe casing if desired. The oilice of this spring is to normally hold theactuator in an active extended position as shown in Figs. 1 and 2 of thedrawings and it serves'to permit of an immediate return of the actuatorto its normal'position when pressure of the hand is'removed'from the cap50..v It further functions to cause the gear trains between the actuatorand the axle 26 to reverse its operation when pressure of the hand' isreleased from. the actuator so that all of the several instrumentalitiesVwill properly `as` sume their starting positions after motion in onedirection has been set up in the rotor.

The rotor is provided rwith a central detent' support '59 which operatesto limit the gravitationalmovements of the detente in the direction lofthe axle 26. This is deemed properly essential injorder to permit thede- The Dopposite terminal of the tents to be positively movedcentifugally when rotary motion in one direction is imparted to thehanger 39. In operation, [pressure in a downward d1- rection is appliedto the actuator 49 which in turn, revolves the axle 26 in the directionof the arrow shown in Fig. l. In so doing, the detents 44 are moved lbycentrifugal action into coacting contact with the teeth 23 of the rotorand the latter then becomes a fixed part temporarily of the axle andboth are made to rotate together in the same direction. When thedownward movement of the actuator is released the latter is elevated orreturned to its normal position under the .action of the spring 54. Thegear train between the actuator and the axle 26 is then affected so asto revolve the axle in an opposite direction and thereby render the de-ltents inactive. The rotor then continues to revolve by inertia in thepresence of the anvil 18 ofthe diaphragm. The parts are combined with aregard to accomplishing a perf ect balance of the severalinstrumentalities so that a high measure of eiiciency is obtained andsounds of a high amplitude and of a long duration, set up.

In the form of the invention shown in Figs. 9 and 10, the actuator 49 isarranged in direct contact with, a small gear wheel 60 upon an axle 61.Aside from this specilic arrangement the essential parts of themechanism are identical withA those in the previously describedembodiment.

From the foregoing, it is thought that the construction, operatlon andmany adv-antages of the herein described invention will be apparent tothose skilled in the art without further description; and it will beunderstood that various changes in the size, shape, proportion, andminor details of construction may be resorted to without departing fromthe spirit or sacrificing any of the advantages of lthe invention. Forinstance, I would not desire to limit myself to the particular actuatingmechanism herein shown for :transferring motion to the axle 27 as manyways might be substituted for the means suggested herein, althou h Ifind the present means practical and gully appropriate 1n every respect.

What is claimed as new is:-

.1. In a device of the class described, a vibratory member, a rotorcoacting with said member to vibrate the same, an annular interiorclutch surface on the rotor adjacent the periphery thereof', a movablehanger, clutch devices on the .hanger adapted on movement of the latterto engage with said annular clutch surface, and means for transmittmgmotlon toA said hanger to advance the clutch devices thereof intodriving engagement with said annular clutch surface.

2. 'In a signal adapted to be sounded by the rotation of a rotor, aninterior ratchet surface on the rotor near the outer periphery thereofand concentric with the latter, a rotatable member mountedconcentrically with the rotor and independently thereof, detents on the'said rotatable member adapted when the latter is rotated to move intoengagement with said ratchet surface to lock the rotor and said membertogether, and means for rotating said rotatable member at high speed.

3. In a device of the class described, a vibratory member, a rotorengaged with said member and adapted to actuate the same 1 whenrotating, an annular interior ratchet 'surface on sald rotor near .theouter periphery of the rotor and concentric with thel same, a hangermovable independently of the rotor and concentric therewith, the said'hanger comprising radial arms, detents carried by said arms and adaptedto engage with the said ratchet surface, and means for rotating saidhanger.

4. In a device of the class described, a vibratory member, a support, anaxle upon said support, a rotor lrotatably supported upon said axle andoperatively engaged with said vibratory member, an annular interiorratchet surface on said rotor near the outer periphery thereof, a hangersecured upon said axle and comprising radialy arms, detents near theouter ends of said arms adapted to engage with said ratchet surface andto lock the hanger and rotor together, a relatively small pinion aixedto said axle, a large gear in mesh with said pinion, a small gear-aiixed to the. said large gear, a rack plunger in mesh with said smallgear, and means for holding the plunger at the limit of its movement inone direction.

5. In a device of the class described, a vibratory member, a support, anaxle upon said support, a relatively large rotor loosely mounted uponsaid axle, and having its periphery operatively engaged with saidmember, one side of said rotor being cut away to provide inner Iandouter concentric surfaces, a hanger secured .to said axle and comprisingradial arms, pivoted elements at4 the ends of said arms and disposed inthe cut axwa portion of said rotor, the said elements imted inl theirinward swinging movement by said inner surface and adapted to engage thesaid outer surface when swung cutwar 1y, .and means forrotating saidaxle.

In testimony whereof I alix my signature.

GERARD R. MARSICO.

